new pc config

Dear Masters :)

pls help to another noob with config :)
for 5 box ofc.

Already have:

Monitors: SyncMaster 225BW +IIYAMA ProLite E430
Box Chieftec DA-01B-D

Will buy:

CPU: Intel "Core i7-860" (2.80, 4x256kb+8mb, EM64T) Socket1156

Cooler: Socket775/1156/1366/AM2/AM3 Cooler Master "Hyper 212 Plus RR-B10-212P-GP"
or Scythe Mugen-2 rev.for S1156

Mom:
Socket1156 GIGABYTE "GA-P55M-UD4" (iP55, 4xDDR3, SATA II-RAID, U133, 2xPCI-E, SB, 1gb LAN, IEEE1394a, USB2.0, mATX)

Mem:
2x2GB DDR3 SDRAM Kingston "ValueRAM" KVR1333D3N9K2/4G (PC10600, 1333mgz, CL9)

Vid:
PCI-E 1024МБ Sapphire "Radeon HD 5770 Vapor-X" 11163-00 (Radeon HD 5770, DDR5, 2xDVI, HDMI, DP)
or maybe if really needed: HD5750 or HD5870?

HDD:
X25-M Intel > OCZ Vertex

Power:
Corsair <CMPSU-620HXEU> 620W ATX (24+8+4+2x6/8pin) Cable Management

Config was given to me by friend, but he did not know what is multiboxing & WoW.. so I need to change something.. mem etc.. AFAIK i need 8-12gb of mem? Ane other changes?

many tnx

nah, you're good dude.

8gigs of ram and you're on ez street.

8 GB ram. I don't know if the video card is enough. Your monitors are small and I think it's probably okay but I don't know.